Functions draw circle, rectangle

from turtle import Turtle

tina = Turtle()

def circle_area(r):
  return 3.14 * r * r

def circle_circumference(r):
  return 3.14 * 2 * r

def draw_circle(t_name, r, col):
  t_name.color(col)
  t_name.dot(2 * r) #This circle will be drawn wherever pen happens to be when it is called

  t_name.penup()
  t_name.goto(0,5) #Assumes circle is at 0,0. How might you adapt if you have x,y parameters?
  t_name.pendown()
  t_name.color("black")
  t_name.write("Area: " + str(circle_area(r)), align="center")

  t_name.penup()
  t_name.goto(0,-5)
  t_name.pendown()
  t_name.color("black")
  t_name.write("Circumference: " + str(circle_circumference(r)), align="center")

def rectangle_area(horizontal, vertical):
    return horizontal*vertical

def rectangle_perimeter(horizontal, vertical):
    return 2*(horizontal + vertical)

def draw_rectangle(t_name, horizontal, vertical, col):
    t_name.hideturtle()
    t_name.begin_fill()
    t_name.color(col)
    t_name.forward(horizontal)
    t_name.left(90)
    t_name.forward(vertical)
    t_name.left(90)
    t_name.forward(horizontal)
    t_name.left(90)
    t_name.forward(vertical)
    t_name.end_fill()

    t_name.penup()
    t_name.goto(horizontal/2+0,vertical/2+5)
    t_name.pendown()
    t_name.color("black")
    t_name.write("Area: " + str(rectangle_area(horizontal,vertical)), align="center")

    t_name.penup()
    t_name.goto(horizontal/2+0,vertical/2-5)
    t_name.pendown()
    t_name.color("black")
    t_name.write("Perimeter: " + str(rectangle_perimeter(horizontal,vertical)), align="center")

draw_circle(tina, 25,"violet")
draw_rectangle(tina, 100, 200,"red")
#draw_circle(tina, 25,"violet")